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What's the difference between tilde(~) and caret(^) in package.json?
... npm , I tried npm install moment --save . It saves the entry in the package.json with the caret ^ prefix. Previously, it was a tilde ~ prefix.
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Assign output of a program to a variable using a MS batch file
...le rather than on the command line. Imagine, your test.bat has something like:
for /f %%i in ('c:\cygwin64\bin\date.exe +"%%Y%%m%%d%%H%%M%%S"') do set datetime=%%i
echo %datetime%
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What does !! mean in ruby?
...are nil and false, so it's usually best to let that convention stand.
Think of it as
!(!some_val)
One thing that is it used for legitimately is preventing a huge chunk of data from being returned. For example you probably don't want to return 3MB of image data in your has_image? method, or you ...
Cleaning up the iPhone simulator
...Library/Application Support/iPhone Simulator/User/Applications"
Also check:
"$HOME/Library/Developer/CoreSimulator/Devices"
The GUID files and directories match up to the simulator's installed apps.
Manually delete all those files/directories to remove all applications from the simulator.
I k...
Why do I get the error “Unsafe code may only appear if compiling with /unsafe”?
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To use unsafe code blocks, the project has to be compiled with the /unsafe switch on.
Open the properties for the project, go to the Build tab and check the Allow unsafe code checkbox.
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Difference between toFixed() and toPrecision()?
...Ref at w3schools: toFixed and toPrecision
EDIT:
I learned a while back that w3schools isn't exactly the best source, but I forgot about this answer until I saw kzh's, uh, "enthusiastic" comment. Here are additional refs from Mozilla Doc Center for toFixed() and for toPrecision(). Fortunately f...
cd into directory without having permission
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JonathanJonathan
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Are tuples more efficient than lists in Python?
... answered Sep 16 '08 at 2:13
Mark HarrisonMark Harrison
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Phone: numeric keyboard for text input
Is there a way to force the number keyboard to come up on the phone for an <input type="text"> ? I just realized that <input type="number"> in HTML5 is for “floating-point numbers”, so it isn’t suitable for credit card numbers, ZIP codes, etc.
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What is the string length of a GUID?
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stevehipwellstevehipwell
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